CVE-2023-2262
Rockwell Automation Select Logix Communication Modules Vulnerable to Email Object Buffer Overflow
- Published
- Updated
- Reserved
- Assigned by
- Rockwell
Description
A buffer overflow vulnerability exists in the Rockwell Automation select 1756-EN* communication devices. If exploited, a threat actor could potentially leverage this vulnerability to perform a remote code execution. To exploit this vulnerability, a threat actor would have to send a maliciously crafted CIP request to device.
Timeline
ID reserved
By Rockwell
- 5 months later
· 5 months later
Published
- 12 months later
· 12 months later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| RockwellCNA (assigner) | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVDNVD · Modified | 3.1 | Critical9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 1.3% · top 30% of all CVEs (7 Nov 2026)
- CISA SSVC
- Exploitation: none · Automatable: yes · Technical impact: total
The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 9.8.
Weakness
Affected products
Rockwell Automation · 1756-EN2T Series A, B, C
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2T Series D
- affected <=11.002
Rockwell Automation · 1756-EN2TK Series A, B, C
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2TXT Series A, B, C
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2TXT Series D
- affected <=11.002
Rockwell Automation · 1756-EN2TP Series A
- affected <=11.002
Rockwell Automation · 1756-EN2TPK Series A
- affected <=11.002
Rockwell Auotmation · 1756-EN2TPXT Series A
- affected <=11.002
Rockwell Automation · 1756-EN2TR Series A, B
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2TR Series C
- affected <=11.002
Rockwell Automation · 1756-EN2TRK Series A, B
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2TRK Series C
- affected <=11.002
Rockwell Automation · 1756-EN2TRXT Series A, B
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2TRXT Series C
- affected <=11.002
Rockwell Automation · 1756-EN2F Series A, B
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2F Series C
- affected <=11.002
Rockwell Automation · 1756-EN2FK Series A, B
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN2FK Series C
- affected <=11.002
Rockwell Automation · 1756-EN3TR Series A
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN3TR Series B
- affected <=11.003
Rockwell Automation · 1756-EN3TRK Series A
- affected <=5.008 & 5.028
Rockwell Automation · 1756-EN3TRK Series B
- affected <=11.002
What to do
Solution: Update firmware. Update EN2* ControlLogix communications modules to mitigated firmware. * Restrict traffic to the SMTP port (25), if not needed. * Customers using the EN2/EN3 versions 10.x and higher can disable the email object, if not needed. Instructions can be found in the EtherNet/IP Network Devices User Manual (rockwellautomation.com) https://literature.rockwellautomation.com/idc/groups/literature/documents/um/enet-um006_-en-p.pdf , publication ENET-UM006. * QA43240 - Recommended Security Guidelines from Rockwell Automation https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1085012
References (1)
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2023-2262)Record last updated .